Tunable lasers at 1080 nm for helium optical pumping

We describe the current status of tunable, cw, solid-state lasers in the infrared region of the spectrum which may be tuned to the helium resonance transition near 1083 nm. The principal use for these laser devices is the optical pumping of 3He and 4He atoms via the 23S1 metastable state. The tunabl...

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Bibliographic Details
Published in:Journal of applied physics 1990-08, Vol.68 (3), p.943-949
Main Authors: SCHEARER, L. D, TIN, P
Format: Article
Language:English
Subjects:
426002 - Engineering- Lasers & Masers- (1990-)
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
CHARGED PARTICLES
Doped-insulator lasers and other solid state lasers
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
ENGINEERING
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
Exact sciences and technology
EXCITED STATES
Fundamental areas of phenomenology (including applications)
GLASS
HELIUM 3
HELIUM 4
HELIUM ISOTOPES
INFRARED RADIATION
IONS
ISOTOPES
LASERS
LIGHT NUCLEI
LITHIUM COMPOUNDS
METASTABLE STATES
NEODYMIUM IONS
NIOBATES
NIOBIUM COMPOUNDS
NUCLEI
OPTICAL PUMPING
Optics
OXIDES
OXYGEN COMPOUNDS
Physics
PUMPING
RADIATIONS
REFRACTORY METAL COMPOUNDS
SILICON COMPOUNDS
SILICON OXIDES
SOLID STATE LASERS
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
TUNING
YTTRIUM COMPOUNDS
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Description
Summary:We describe the current status of tunable, cw, solid-state lasers in the infrared region of the spectrum which may be tuned to the helium resonance transition near 1083 nm. The principal use for these laser devices is the optical pumping of 3He and 4He atoms via the 23S1 metastable state. The tunable lasers we have examined include Nd3+-doped YAlO3, LaxNd1−xMgAl11O19 (x ∼0.15), Nd:LiNbO3, and Nd:silica glass fibers. Power outputs from these lasers range from a milliwatt to more than 1 W at the helium transition. Laser emission bandwidths range from less than 40 MHz (single-mode operation) to several GHz. Applications include magnetometry, dense nuclear targets, and polarized electron beams.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.346657